CUH-1216B HDMI encoder

I have a possible MN864729 HDMI chip fault in a PS4. The port seems ok, filters are fine so I took off the encoder. It was kind of weird to me that after taking the chip off, I measured at about 8 pins grounded on every side of the chip’s place on the motherboard. So I started to think if something else is grounding the place of the chip or is it normal? Is there any reliable schematic available for this chip?